Lesson 1: Introduction to Solubility Unit 3: Solubility Lesson 1: Introduction to Solubility

Types of Solutions Molecular solutions contain only neutral molecules. They are usually made up of covalent compounds (non-metal + non-metal). Examples of the formation of molecular solutions: CH3OH(l) → ClO2(l) → Have students jot down their answers – 5 min

Types of Solutions Ionic solutions contain ions. They are usually made up of ionic compounds (metal + non-metal). Examples of the formation of ionic solutions: (NH4)2HPO4(s) → NaH3P2O7(s)→ Have students jot down their answers – 5 min

Check Your Understanding Pg. 74 #1 and 2 5 min

Solubility and Saturated Solutions Think-Pair-Share: What were the definitions used for these terms in Chemistry 11? “Upgraded” definitions: The solubility of a substance is the equilibrium concentration of the substance in a saturated solution at a given temperature. A solution is saturated when: Some undissolved material is present, AND Equilibrium exists between the dissolved and the undissolved material. 5 min

Equations for Saturated Solutions When a solution is saturated... The forward reaction is the dissolving reaction. E.g. AgBrO3(s) → Ag+(aq) + BrO3-(aq) The reverse reaction is the crystallization reaction. E.g. Ag+(aq) + BrO3-(aq) → AgBrO3(s) The overall equilibrium reaction is written as a net ionic equation. E.g. AgBrO3(s) Ag+(aq) + BrO3-(aq)

Brain Break – Spot 3 Differences!

Demo – Cup Race! Place 2 styrofoam cups in 2 beakers. Ask for volunteers to see who can fill up their cup first. Give one a water squirt bottle and one an acetone squirt bottle. – 15 min

Apply Your Knowledge Pg. 76 #3-7 15 min